Ratchet-wrench.



PATENTED AUG. 11, 1903..

MN EB TR WW M m u APPLICATION FILED APR. 22, 1903.

I0 MODEL N WW r M m H IHWH M H w 1 6 J W m w Ihlo. 736,047.

UNITED STATES Patented August 11, 1905.

PATENT OFFICE;

RATCHET-WRENCH.

SPECIFICATION forming part of Letters Iatent No. 736,047, dated August 11, 1903.

Application filed April 22, 1903. Serial No. 153,739. (No model.)-

To aZZ whom it may concern:

.Be it known that I, DAVID L. WINTERS, a citizen of the United States ofAmerica, and a resident of Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements in Ratchet-NVrenches, of which the following is a specification.

The present invention relates to ratchetwrenches, and has for its objectto provide a simple 7 and efficient construction of parts, whereby theusual number of parts is reduced and simplified and with which areadilyreversible nature is imparted to the Wrench, all as willhereinafter more fully appear and be more particularly pointed out inthe claim.

In the accompanying drawings, illustrative of the presentinvention,.Figure 1 is a sectional elevation at line 00 00, Fig. 2, ofan ordinary ratchet-Wrench embodying the present invention. Fig, 2 is asectional elevation at line w w of Fig. 1. Fig. 3 is a side elevation ofthe wrench-chuck detached.

Similar numerals of reference indicate like parts in the differentviews.

Referring to the drawings, 1 represents the operating head or hub of thewrench, formed with a transverse cylindrical bearing-orifice 2 for thetrunnion portion of the wrench-chuck, hereinafter described. Such headis also formed with a guide bore or recess 3, connecting With thebearing-orifice '2 aforesaid and adapted to hold thehereinafter-described spring dog or detent of the wrench.

4 is the operating handle bar or lever of the wrench, which will usuallyform an integral part of the Wrench-head 1, but which, if desired, maybe a separate member removably connected to said head, as usual in thepresent type of wrenches.

5 is a sliding dog or detent moving in the guide-recess 3 aforesaidandhaviug the usual pointed end for engagement with thecircularly-arranged ratchet-detents of the wrenchchuck.

6 is a spiral spring arranged in therecess 3 and having bearing againstthe sliding dog 5 and adapted to force the same into operativeengagement with the ratchet-detents of the chuck-shank.

7 is a cross-pin attached to the sliding dog 5 and moving in, elongatedslots 8 in the sides of the wrench-headl to limit the extent of thesliding movement of the said dog or detent and to afford means forretracting the door 51s the head portion of the Wrench-chuck,

formed with a receivingrecess 10 of any usual and required form, whichadapts the same for operative engagement with a nut or other article tobe rotated.

11 is acylindrical extension or shank on the head portion 9 of thechuck, fitting the cylindrical bearing-orifice 2 of the chuck-head toform the trunnion upon-which said head is oscillated. j

12 represents a circularly-arranged series of ratchet-detents formed bynotches or recesses in the periphery of the trunnion 11 and adapted foroperative engagement by the spring-dog 5 aforesaid.-

13 is an annular recess formed in the periphcry of the trunnion 11 andhaving a length equal to that of the ratchet-detents 12 and that of thedog 5, the arrangement being such that the annular run 14, formed at therear end of thetrunnion by such annular recess, is adapted to havebearing against theside of the dog 5 to maintain the wrench partsinproper relative position and prevent longitudinal disengagement ofthesame during use. With the described construction'the simple operationof pushing the spring-dog 5 up by hand to a retracted position in itsguide-recess 3 will permit ofaready longitudinal disengage ment of theWrench parts and a subsequent reassemblage of the same in an operationto effect a reversal of the wrench-chuck from a right-hand to aleft-hand position, and vice versa.

Having thus fully described my said invention, what I claim as new, anddesire to secure by Letters Patent, is-

In a ratchet-wrench, the combination of a wrench-head formed with atransverse bore, a wrench-chuck formed with a trunnion extension fittingthe transverse bore of the recess aforesaid to prevent longitudinal dis-1o operating-head, and adapted for ready longiengagement of the chuckfrom the wrenchtudinal detachment therefrom, said trunnion head,substantially as set forth.

being formed with a circular series of ratchet- Signed at Chicago,Illinois, this 17th day of DAVID L. WINTERS.

detents and with annular recess in its periph- April, 1903. ery, andaspring-dog arranged in the wrenchhead and adapted for operativeengagement with the ratchet detents aforesaid and for l lateral holdingengagement with the annular Witnesses:

ROBERT BURNS, M. H. HOLMES.

